Varnish and process of making same.



ii errori il rid .e

sttcnlaniu F. conefnmmoe'sfronenson, sasssecisixssfizrs, essiconon 'ro,on

persiste l l wie@ KENNARD, 0F NEVJTON CENTER, MSSACEUSETT.

VANISE AND PROCESS 0l? MARKING SAME.

messes. Heinen/ing.

To* all whom it mayv concern Be it known thatr l, MioHAEL F. CoUGi-I-LiN, a citizen of the United States, residing at Stoughton, in thecounty of Norfolk and uct. obtained by evapmatirwr Waste sulfite liquor,the` resin and the snltite lpitch being dissolved in a suitable commonsolvent, produces a varnish capable of yielding lilms having desirablecharacteristics. The material referred Ato herein as kino is not to beconfused with ivater-soluble tanning en tracts which are 'sometimesdesignated by the saine naine: it is a resin ot reddish color, which isinsoluble in Water, infixed oils or in tnrpeniine, but soluble inalcohol and in alkaline solutions of soda., potash, annnonia, ctc.ll'rhen flestrlictively distilled, it yields phenolic bodies having anoder 'suggesting cresolw lhis resin when dissolved in alcohol andapplied to a surface dries to a var nish tilni which, while commerciallyavail able for many purposes, is brittle.

illusie snliitc liquor is the etliuent from the digesters in the sultileprocess of mak; inga pulp, and the material which l use as a componentot' the varnish is the product which results from the evaporation todryness of this Waste soltite liquor, such product heine; lino-iva inthe trade as sullite pitch. This sullite 'pitch may he used in 'thebleached condition ii' desired.

l have found that kino resin is soluble in mixturesy containing 76 percent. ott' ethyl or methyl alcohol, and 30 per ccnl'. of Water;

anol also that evaporated or concentrated Waste sulite liquors, 'as Wellas sultite pitch, se are likewise soluble in such 7C- percent.lalcoholic. mixtures. l have alsol found that the resin -and the pitchcan be simultaneously dissolved in ZU per cent. alcohol; and 'that theycan he dissolved separatelyin 7() per cent, alcohol and the solutionssubsequently' mined, yielding a lioinofgcneous solution. Il, havefurther found 'that the 'resin con be dissolved in alcohol strong-'crthan 7G per cent., and the pitch in alcohol ol loss Specification ofLetters '.Eatezat.- .Applicationr filed February 2, 1914. crial No.lil.-

fil:

Potente@ telly pitch solutions can then be combined to form asatisfactory and homogeneous vali nisli, provided that the percentageolf tiene hol in the resulting mixture clocs not hill, appreciably belowZ0 per cent.n Solutions thus prepared are suitable for ese allor vai`-`nish and other purposes, anni the lili-ns pro duced hy their evaporationlieven high de gree of flexibility as compared with those consistingsolely of the kino resin.

The relative proportions ot kino anni pitch in the varnish compositionmay vary widely, and the invention is not restricted to there use in anydenite relative proportions.

l. i composition adapted At'or ass as varnish, containing` kino resin,the' solid con stituents of Waste sullite liquor, and a coin'- monsolvent for said resin and snlite liquor constituents. 4 t

2. A composition adapted. for' use as varnish, containing kino resin,the soliti ce stitucnts of waste snllite liquor, and s com` mon solvent.for said resin and sullite ,lione constituents, saicl solvent comprisinga mi. ture of alcohol and water.

A composition adapted for use varnish, containing kino resin analsnliite pitch, in solution `in alcohol of approxi mately 70 per cent.concentration.

4. process el preparing 'a varnish, which consists in dissolving kinoresin in than `70 per cent. concentration, or K"Water Without anyalcohol, and the resin anni @SSL alcohol of more than 7G per cent.concentretion, dissolving sulfitepitch in a solvent eon-- i taining lessthan ,70 per ccnl?. of alcohol, and combining the solutions inproportion to form a'homogeneous Varnish composition,

5. A process of preparing a varnish, which consists in dissolving innoresn alcohol of more than T0 per cent. cone tion, dissolving sulitepitch in s solvent containingless than 70 per eens of alcohol, andcombining' the solutions in'fsuch pre, port-ion that the resultingsolvent contains approximately 70 per cent. oi alcohol.,

ln testimony. whereo l ellis: mysigne ture in presence of tivowitnesses.

Micnann contienne.

Witnesses llanto: S. Mean, CARL F., 'Weens

